bury (someone's) head in the sand

Translations
прятать голову в песок
She tends to bury her head in the sand when faced with difficult situations.
Она склонна прятать голову в песок, сталкиваясь с трудными ситуациями.
Definitions
To ignore or avoid dealing with a difficult or unpleasant situation, often by pretending it does not exist.